Speck Electronics X.Sum - Manual (Page 19)

Chapter 3 Operation Section 15
10
11
Typically, this input is used to connect one side of a stereo or dual channel
source. The "mono" designation on the left jack indicates that this jack should
be used when you have only a monoural source.
Typically, this input is utilized to connect the alternate side of a stereo or dual
voice source. An input channel cannot function in stereo unless the right input
is connected.
The 16 stereo input channels of the X.Sum will work with either balanced tip-
ring-sleeve (TRS) ¼" plugs as or unbalanced tip-sleeve (TS) ¼" plugs.
The configuration for the ¼" TRS Input Jacks are as follows:
Tip = High (+)
Ring = Low (-)
Sleeve = Ground
Input Channel
Connectors
10. Left/Mono Input Jacks
11. Right Input Jack